Automobile-jack.



M. H. MEYER. AUTOMOBILE JACK. APPLICATION PILED APR. 5, 1913.

' 1,094,004, Patented Apr. 21, 191 1 2 SHEETS-SHEET 1.

WITNESSES:

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'AU'IOMOBILE-J'ACK.

Specification 0'! Letters Fatent.

Patented Apr. 21, 1914..

Application filed April 5, 1913. Serial m. 759,227.

Automobile-Jacks, of which the following is a specification.

This invention, which relates generally to means for lifting vehicle bodies 'ofl" the.

ground as they are moved into operative connection therewith, is more especially intended. for use as an automobile jack, in which the several parts are cooperatively so arranged that the momentum of the auto, as it engages with the jacking devices, causes the said devices to raise the auto to relieve the tires from strain and to provide for readily and conveniently repairing or, replacing tires and making other desired repairs.

My invention is an automobile jack in which is embodied the peculiar and novel construction and the detailed arrangementof the parts hereinafter fully explained, specificaily pointed out in the appended claims and illustrated in the accompanying drawings, in which: v Figure 1 is a perspective view of myinvention, the movable carriage 'or supporting frame being at its rearward or normal position, the front and rear axles of an approacheing indicated and positioned as about to engage with the said carriage or frame. Fig. 2 is a similar view, the carriage or frame being shown at its rorward or automobile supporting position, y

ie, .carriage or frame being held locked 'e ck, parts being shown in sect-ionfor n enlarged detail of the. spring latch l ror holding the supporting carriage tor dly shifted position. Fig. '7 is view oi. a bumper clip hereinf referred to, and Fig. 8 is a iew of a' modified form of bumper specified. are object of my invention is to provide a compact, inexpensive and eflective e being shown at its lifted position,

-rward position. Fig. 3 is a perspecof the base or-platform portion of my' arctic g the adjustable connections. Fig.

T means ofthe general character stated, that can bdreadily located in a garage and a d- ]llSt8d in such a manner that the auto vehicle may be conveniently run into position and caused toengage the jack to automatically set. it,- as it were, to liftthe auto from the ground'and supported ready for making the desired repairs.

In carrying out my invention, I provide a base frame consisting of two metal bars 1-1, each formed of two sectionslO-lO, the adjacent ends of which have apertures l1--11 and overlap to. receive the clamp screws 12, such means of connection providing for longitudinally adjustingthe side bars 1,-1 be ore fastening them down to the floor. The front and rear sections of the said bars 1- 1 have vertical side flanges- 2-2 that form side stays and provide for securing the inclined trackways 330, the

'rear ones having a longitudinal slot 31 for receiving the central rim flange 4 on the rear wheels 40 of the carriage or movable sup porting' frame 5, which also includes the front wheels 41 having an outside rim 42,

front wheels travel on the front trackways 3. The side bars 1'-1 are connected at the front end, by a transverse connection, consisting of two overlapping plates 6--6 having alinit being understood from the drawings the 1 ing horizontal slots 60 for adjusting the length of the said connection, the adjust-. ments being held by the clamp screws and nuts 616 62-62 designate brackets onthe front of the plates'6 -'-6 and in these is rockably mounted a rod'7'als0 formed of longitudinally extensible sections and provided with crank portions 7070, one end being extended to one side of the base of the structure arid terminating in a second crank shaped to form afoot lever 71 j Thecarri'age or supporting frame includes two side bars 8-8 each formed of two sections having alining apertures 8080 for receiving the clamping bolts 81 that hold thesaid sections t their longitudinal adjustments. The said side bars'carry the front.

block 82, the'upper faceof which is in the" plane of the bearing surfaces 83 of bumper backs 84: on-the'front end'fof the barsfiche vertical or bumping faces 85 of whichare arranged to be engaged by front axle 9 of the motor vehicle.

16-16 designate yielding bumpers located at the front of the forwardly inclined trackways for retarding the forward travel of the carriage or supporting frame.

The side bars 8-8 of the carriage are joined at their front and rear ends by a transverse connection, which may be two laterally adjusable members17, each fixedly secured to its respective side bar 8, as shown in Figs. 1 and 2, and provided with apertures for receiving the clamping bolts 17.

instead of fixedly connecting the members 17 to their respective side bars 8, as above stated, the said cross connection may be formed of two members 17*, H-shaped in cross section, and arranged for telescopically engaging, each of the sections having apertures 17 for receiving the clamp bolts 17, the said sections also having lateral flanges 17 for sliding into keepers 88 on the sides of the bars 8, as shown in Fig. 4 of the drawlugs.

The front or bumper blocks 84 are detachably mounted on the side bars 8 and for such purpose they are secured to metal side arms l818 whose rear ends are bent down and terminate in upturned hooks 1919, shaped for being conveniently slipped under the stud bolts 25, on the side bars ,8-8, as shown.

26-26 designate fixedly held pawls, one of which projects forwardly from each'side of the carriage frame and the said pawls 26,

when the said carriage or movable frame is forced forwardly 1n the manner presently stated, engage with a suitable latch device,

the construction of which is best shown in Figs. 1 and 3, by reference to which it will be seen to each of the cranks in the rockable rod 7 is pivotally joined a link 27 that joins with a latchbar 28 pivotally mounted on a bracket 14 on the base plate 1', the hook end 29 of which is suitably positioned to be engaged by its corresponding pawl 26.

35 designates a supplemental latch member that is pivotally hung on the latch bar 28. The free end of the member 35 is bent up to extend over the hook end 29 of .the-

latch bar 28 to guide the locking pawl 26 on the carriage into a proper engagement with the said hook end 29 and the said free end of the latch 35 is normally held down over- 29 by a coiled spring connecauto vehicle in, t e direction indicated, the bumper devices 90 engage the bumpers 84 on the bars 8, and in consequence move the carriage or supporting frame with it, and the latter under momentum, traveling up the,

inclined trackways, lifts the auto from the ground with the rear axle of the said auto resting on the rear bumpers on the side bars ing the forward thrust of ,the carriage or supporting frame engage and interlock with their respective latch devices. To release the carriage frame to permit it to travel back down the incline trackways and the auto vehicle to lower to the floor, it is only necessary fort-he operator to depress the foot lever 71 to rock the shaft 7 and thereby open the latch devices to release the said pawls 26. I

For autos that have a thrust rod under the rear axle, I use bumper clips 90, see Fig. 7, and these are attached to the rear axle and form abutting elements for engaging the bumper.

Guides 02 are provided for holding the front wheels from' running sidewisc off the jack, and the said guides are arranged as shown in Fig. 1. I

Since some autos have a steering rod running in front and in line with the ront axle, for such type of autos I have provided a modified form of bumper, and the same is illustrated by Fig.8 of the drawings, in which 9 designates the front axle, and 9" the thrust rod. 86 denotes a bell crank lever that is normally held down by a s ring 88 to project its vertical member in he path of movement of the thrust rod when traveling in the direction of the arrow. 87 designates a stop connected with the bell crank 86 which is forced up in the plane-of the forthe thrust rod 9* shifting the lever 86.

What I claim is:

1. In an automobile jack; base supports having inclined trackways, a carriage mounted to move upon the said inclined trackways and adapted for being moved up the said trackways by the forward im ulse of the vehicle to ,be lifted, means for olding the carriage and the vehicle supported thereon locked to their elevated position, saidmeans including a spring jaw latch held to a normal position under spring tension, a hook on the carriage for enga 'ng and interlocking with the said jaw a ter the carriage an the vehicle thereon have reached their elevated position, and a crank lever shaft connected with the said spring jaw latch for releasing said latch to free the car riage.

2. In an automobile jack; base supports having inclined trackways, a carriage mounted to move upon the said inclined trackways and adapted for being moved up the said trackways by the forward impulse of the vehicle to be lifted, means for bolding the carriage and the vehicle supported thereon locked to their elevated position said means including-,a spring jaw latch held ward movement of the axle 9 by reason of 8, it being understood the pawls 26-26, dur- V ipeeooe to a normal position under spring tension, a hook on the carriage for engaging and interlocking with the said jaw after the carriage and the vehicle thereon l.lVB 1'8lCl1Q(l theirelevated positioma crank lever shaft, a pivoted lifting member that engages the xpring jaw latch connected with the crank lever and adapted for releasing the latch to tree the carriage when the crank lever is actuated.

3. An automobile jack comprising inclined trackweys, a carriage mounted on the track ways and operated by the vehicle to be lifted,

the said carriagehaving a forwardly and fixedly held pawl, a crank shaft connected with the trackways, a catch pivotally mounted on the crank of the said shaft, 21 combined lifter member and guide pivotally mounted on the catch and extended beyond the locking edge of the said catch, the extended end of the said member being held down over the said edge of the catch under spring tension.

MARTIN H. MEYER. WVitnesses E. A. \VILTsE, H. D. HANCOCK. 

